Little Chachalaca (Ortalis motmot)

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Image of a Little Chachalaca in its natural habitat
Birds Chachalaca

Introduction

The Little Chachalaca (Ortalis motmot) is a resident chachalaca in the family Cracidae, which also includes guans and curassows. It occurs in northern South America, particularly southern Venezuela, the Guianas and northern Brazil. Some taxonomic authorities, including the eBird/Clements checklist, use the common name Variable Chachalaca for this species, while the IOC World Bird List uses Little Chachalaca.

Physical Description

The Little Chachalaca is a medium-sized, long-tailed galliform measuring approximately 43–54 centimetres in length and weighing about 345–620 grams. It has a reddish-chestnut head, reddish-brown to grey-brown upperparts and generally greyish underparts. The central tail feathers are grey-brown, while the outer feathers are rusty or rufous, producing a useful field mark when the bird is moving through vegetation.

The primary flight feathers are dark brown, and the facial skin around the eye is dark slate-grey. The legs and feet may appear vinous or reddish. Reliable evidence of marked sexual dimorphism is limited, and males and females are generally similar in external appearance. Plumage can vary geographically, and the species has sometimes been treated differently in taxonomic classifications because of its similarity to related chachalacas.

Range and Habitat

The Little Chachalaca is found from southern and eastern Venezuela eastwards through Guyana, Suriname and French Guiana, extending into northern Brazil. Its distribution is centred on the Guiana Shield and the northern Amazon region. Reports from Colombia are treated cautiously by some authorities, and the species should not be confused with chachalacas that occupy Central America.

It is considered a resident species rather than a regular migrant. The bird is associated with river margins, forest clearings, dense secondary growth, abandoned pasture, coastal scrub and other habitats with thick vegetation. It often uses forest edges and regenerating woodland rather than the interior of undisturbed, closed-canopy forest. Recorded habitats range from lowlands to approximately 1,700 metres, although most observations come from lower elevations.

Behaviour and Diet

Little Chachalacas usually occur in pairs or small groups and may forage both in trees and on the ground. They feed mainly on berries and other fruit, supplemented by flowers, leaves and other plant material. Their use of fruit makes them potential seed dispersers, although the species-specific importance of this role has not been quantified throughout its range.

The birds are conspicuous by voice rather than appearance. Groups produce loud, rough, rolling choruses, especially around dawn and sometimes again in the late afternoon. Calling helps maintain contact between group members and may also advertise occupation of an area. The name chachalaca reflects the characteristic sound of these vocal displays.

Breeding information is comparatively limited. Available records describe a small cup-shaped nest made from roots, leaves and sticks, placed low in a shrub or small tree. A clutch of three eggs has been reported, and laying has been recorded in several months in the Guianas, including May, September and December. Young chachalacas are precocial, hatching in a relatively well-developed condition and able to leave the nest soon after hatching.

Identification Tips

  • Look for a medium-sized, brown, long-tailed bird moving through dense vegetation, often in pairs or small groups.
  • The reddish-chestnut head contrasts with the browner body and greyish underparts.
  • Rusty outer tail feathers are particularly useful when the bird is viewed from behind or in flight.
  • The species is often detected first by its loud, chattering group chorus, which may come from forest edge, riverine growth or secondary woodland.
  • In northern South America, compare it carefully with other Ortalis species. The Little Chachalaca is generally recognised by its chestnut head, rusty outer tail and range in the Guianas and northern Amazonia. Identification should also take account of location, because several closely related chachalacas have overlapping general plumage patterns.

Conservation Status

The Little Chachalaca is assessed as Least Concern on the IUCN Red List. This global category reflects its broad distribution and lack of evidence that it currently meets the thresholds for a threatened category. A precise global population estimate is not available in the sources used here.

Local populations may nevertheless be affected by forest clearance, conversion of riverine and secondary habitats, and hunting. The species’ tolerance of clearings and regenerating vegetation may provide some resilience, but habitat quality and hunting pressure can vary substantially between regions. Maintaining connected forest, river margins and dense secondary growth, together with responsible hunting management, are appropriate conservation measures.

Frequently Asked Questions

Where does the Little Chachalaca live?

It occurs in southern and eastern Venezuela, Guyana, Suriname, French Guiana and northern Brazil, mainly in the northern Amazon and Guiana Shield regions.

Is the Little Chachalaca migratory?

No. It is generally regarded as a resident species, although individuals may make local movements in response to food availability and habitat conditions.

What does the Little Chachalaca eat?

Its diet consists mainly of berries and other fruit, with flowers, leaves and additional plant material also recorded.

How can the Little Chachalaca be identified?

Useful features include the reddish-chestnut head, brown body, greyish underparts, long tail and rusty outer tail feathers. Its loud group chorus is often easier to detect than the bird itself.

Does the Little Chachalaca live in groups?

It is commonly seen in pairs or small groups. Group calling is particularly noticeable around dawn and may help maintain contact between birds.

Is the Little Chachalaca endangered?

The species is currently assessed as Least Concern. Local threats, including habitat conversion and hunting, can still affect populations even though the global assessment does not classify it as threatened.

References

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